The main differences in the PCB123/PCBexpress vs ValueProto services are minimum trace/space, minimum drill, slots and cutouts, and lead-time. We introduced the ValueProto service as an economical way to get a 2 layer board with a longer lead-time.

PCBexpres/PCB123

Minimum trace/space 6 mils

Minimum finished hole 8 mils

Up to 4 slot/cutouts allowed

Standard 2 day lead-time

ValueProto

Minimum trace/space 7 mils

Minimum finished hole 14 mils

No slots/cutouts

1 week lead-time

Please feel free to contact me if you are having trouble placing your Value Proto order.